Jan De Nul is beginning the installation of the remaining section of the second subsea cable for TenneT’s Hollandse Kust (West Alpha) offshore transmission infrastructure.
With over 60 km of cable onboard, the cable-laying vessel Isaac Newton will be working off the coast of Heemskerk/Wijk aan Zee this week.
With this cable section, the contractor combination of Jan De Nul and LS Cable & System is realising the second connection for the offshore wind farm Hollandse Kust (west Alpha) to TenneT’s “socket at sea” 50 km off the coast of Egmond aan Zee.
The first sea cable connection for this wind farm was completed earlier this year.
About five km from the beach, Jan De Nul will bring the first part of the second cable for West Alpha to the surface.
This cable was already pulled under the dunes last year and on the Isaac Newton, the end (still capped) will be connected to the cable on board by means of a so-called sleeve connection.
Once the connection has been made, the cable is placed back on the seabed.
At the same time, the work vessel Symphony from the Belgian contractor’s fleet will follow the Isaac Newton, which will slowly unwind the cable from the large turntable on board.
The Symphony will control the Swordfish cable laying vehicle, which then lays the cable into the seabed.
The cable is installed up to the site where TenneT is building the offshore transformer platform for the West Alpha wind farm built.